145278801 has 12 divisors (see below), whose sum is σ = 212376528. Its totient is φ = 95685144.

The previous prime is 145278799. The next prime is 145278823. The reversal of 145278801 is 108872541.

It is not a de Polignac number, because 145278801 - 2¹ = 145278799 is a prime.

It is a super-2 number, since 2×145278801² = 42211860039995202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145278841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96495 + ... + 97988.

It is an arithmetic number, because the mean of its divisors is an integer number (17698044).

Almost surely, 2^145278801 is an apocalyptic number.

It is an amenable number.

145278801 is a deficient number, since it is larger than the sum of its proper divisors (67097727).

145278801 is a wasteful number, since it uses less digits than its factorization.

145278801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194572 (or 194569 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 145278801 is about 12053.1656007872. The cubic root of 145278801 is about 525.6952855923.

The spelling of 145278801 in words is "one hundred forty-five million, two hundred seventy-eight thousand, eight hundred one".